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Hyaluronic Acid-Functionalized Nanomicelles Enhance SAHA Efficacy in 3D Endometrial Cancer Models
Cancers, Volume: 13, Issue: 16, Start page: 4032
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Histone Deacetylase (HDAC) enzymes are upregulated in cancer leading to the development of HDAC inhibiting compounds, several of which are currently in clinical trials. Side effects associated with toxicity and non-specific targeting indicate the need for efficient drug delivery approaches and tumor...
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Histone Deacetylase (HDAC) enzymes are upregulated in cancer leading to the development of HDAC inhibiting compounds, several of which are currently in clinical trials. Side effects associated with toxicity and non-specific targeting indicate the need for efficient drug delivery approaches and tumor specific targeting to enhance HDAC efficacy in solid tumor cancers. SAHA encapsulation within F127 micelles functionalized with a surface hyaluronic acid moiety, was developed to target endometrial cancer cells expressing elevated levels of CD44. In vitro viability and morphology analyses was conducted in both 2D and 3D models to assess the translational potential of this approach. Encapsulation enhanced SAHA delivery and activity, demonstrating increased cytotoxic efficacy in 2D and 3D endometrial cancer models. High-content imaging showed improved nanoparticle internalization in 2D and CD44 enhanced penetration in 3D models. In addition, the nano-delivery system enhanced spheroid penetration resulting in cell growth suppression, p21 associated cell cycle arrest, as well as overcoming the formation of an EMT associated phenotype observed in free drug treated type II endometrial cancer cells. This study demonstrates that targeted nanoparticle delivery of SAHA could provide the basis for improving its efficacy in endometrial cancer. Using 3D models for endometrial cancer allows the elucidation of nanoparticle performance and CD44 targeting, likely through penetration and retention within the tumor model.
polymeric nanoparticles; hyaluronic acid; epigenetics; SAHA; nanomedicines; gynecological oncology; F127 micelles; targeted therapeutics; 3D models
Swansea University Medical School
This research was funded by Welsh Government’s European Social Fund (ESF) convergence
programme for West Wales and the Valleys KESS II and Tenovus Cancer Care (KE). The Celtic
Advanced Life Science Innovation Network (CALIN), an Ireland Wales 2014–2020 programme part
funded by the European Regional Development Fund through the Welsh Government (SY). The
Erasmus+ Mobility Scheme (SP), this project was co-funded by the European Union. The Life Sciences
Cancers 2021, 13, 4032 20 of 23
Research Network Wales: project grant ‘Nanoparticle delivery of epigenetic modifiers: a targeted
approach for Endometrial Cancer treatment’ (KB). The Natural and Environmental Research Council,
UK [grant number NE/K004212/1] and SMARTExpertise 2014–2020 West Wales and the Valleys,
European Regional Development Fund, under Grants 2017/COL/001 and 2017/COL/004 (AG).